Convert 10 Old Mauritanian Ouguiya (MRO) to Optimism (OP)

Convert old Mauritanian ouguiyas to Optimism at the live mid-market rate. Reverse: OP to MRO

The Old Mauritanian Ouguiya is no longer in use

Old Mauritanian Ouguiya (MRO) was replaced by the Mauritanian Ouguiya (MRU) in 2018. For today’s money, convert MRU to OP.

Amount

From

10 old Mauritanian ouguiyas =

0.2074 OP +1.12% today

1 MRO = 0.0207388 OP · 1 OP = 48.2189 MRO

Mid-market rate, updated 07:00 UTC. Paid plans update as often as every 60 seconds. Get MRO→OP rates via API

MRO to OP over the last year

52-week high: 0.034091
52-week low: 0.003697
52-week average: 0.019285
Change over the year: +436.06%

Conversion tables

MRO to OP
MRO	OP
1 MRO	0.02074 OP
10 MRO	0.2074 OP
100 MRO	2.07387546 OP
1,000 MRO	20.73875460 OP
10,000 MRO	207.38754600 OP
50,000 MRO	1,036.93773000 OP
100,000 MRO	2,073.87546000 OP

OP to MRO
OP	MRO
1 OP	48.22 MRO
10 OP	482.19 MRO
100 OP	4,821.89 MRO
1,000 OP	48,218.90 MRO
10,000 OP	482,189.03 MRO
50,000 OP	2,410,945.16 MRO
100,000 OP	4,821,890.32 MRO

Get MRO→OP rates via API

The live rate, the rate on any past day or a whole range, for OP and 170+ other currencies, as JSON. Free plan included. See the exchange rate API.

Get a free API key API documentation

curl https://api.currencyapi.com/v3/latest \
  -G -d base_currency=MRO -d currencies=OP \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=MRO -d currencies=OP \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about MRO to OP

How much is 10 MRO in OP?

10 old Mauritanian ouguiyas is 0.2074 Optimism at the mid-market rate of 4 October 2026, 07:00 UTC, when 1 MRO = 0.0207388 OP.

What was the MRO to OP rate over the last year?

Over the last 52 weeks 1 MRO ranged from 0.00369697 to 0.0340907 OP, 0.0192851 OP on average.

Which exchange rate is this?

The mid-market rate: the midpoint between what currency markets pay and ask for MRO/OP, without the margin a bank or card issuer adds, so the rate you are charged is usually a little worse.